The causes of lumps and pain in male breasts are: 1, chest lymph nodes, lymph nodes increase in size and swelling when stimulated by inflammation, have a certain degree of mobility, smooth and clear borders, need a light diet, anti-inflammatory treatment, if the pain is obvious, large lymph nodes need to be removed surgically, not physiotherapy. 2, breast hyperplasia, need to take estrogen, obesity leads to abnormal hormone levels in the body, the emergence of male breast feminization, will also The lump is painful to press, movable and smooth, a benign nodule, which can be treated with drugs to regulate endocrine secretion. 3. Breast cancer, which is highly prevalent in women and can also occur in men, can cause pain and lumps, and also changes in the skin pattern of the breast, red and swollen nipples, sometimes retracting, adhesion of the lump to the surrounding tissue, and poor mobility.